Metal Slug Tactics
93 Achievements
Steam
Optimization
Launch 3 Special Actions in 1 turn with Marco.
31.1%
How to unlock the Optimization achievement in Metal Slug Tactics - Definitive Guide
X2poet
TrueAchievements
TrueAchievements
Just a trick. You can use any Marco's Special Action, and cancel it. If you did this 3 times in a turn, then use the skill, it will pop.
